The main theater in Rotterdam, located right in the centre of town, is the Rotterdamse Schouwburg and home of Theater Rotterdam (see below). This is really one of my favourite spots in the city because I am a real theatre buff. At the start and half-way during the season they host the festival ‘De Keuze‘ (where they pick out the best performances from all over the world). It is also a location for the world famous International Film Festival Rotterdam which takes place in January-February. And the big pop concerts of festival Motel Mozaique (in April) are hosted by the Rotterdamse Schouwburg. In May the focus is on modern dance.
The Rotterdamse Schouwburg is also the home of some theatre groups and dance companies. Famous dance companies like Conny Janssen Danst and the Scapino Ballet have their opening nights here. Young and modern theatre comes from Wunderbaum. Since spring 2017 Rotterdamse Schouwburg, Wunderbaum and Ro Theater are Theater Rotterdam (check the Ro Theater article). The big Christmas productions are staged at the main stage of the Rotterdamse Schouwburg.
Conclusion: never a dull moment in the Rotterdamse Schouwburg.